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Tarsiers are small animals with enormous eyes; each eyeball is approximately 16 millimetres (0.63 in) in diameter and is as large as, or in some cases larger than, its entire brain. [ 16 ] [ 17 ] The unique cranial anatomy of the tarsier results from the need to balance their large eyes and heavy head so they are able to wait silently for ...
Crepuscular, a classification of animals that are active primarily during twilight, making them similar to nocturnal animals. Diurnality, plant or animal behavior characterized by activity during the day and sleeping at night. Cathemeral, a classification of organisms with sporadic and random intervals of activity during the day or night.
The aye-aye is a nocturnal and arboreal animal meaning that it spends most of its life high in the trees. Although they are known to come down to the ground on occasion, aye-ayes sleep, eat, travel and mate in the trees and are most commonly found close to the canopy where there is plenty of cover from the dense foliage.
Night monkeys have large brown eyes; the size improves their nocturnal vision increasing their ability to be active at night. They are sometimes said to lack a tapetum lucidum, the reflective layer behind the retina possessed by many nocturnal animals. [8] Other sources say they have a tapetum lucidum composed of collagen fibrils. [9]
These big-eyed, nocturnal marsupials are incredibly interesting animals to keep as pets, in no small part because, as their name implies, they glide through the air using thin gliding membranes ...
The pygmy tarsier (Tarsius pumilus), also known as the mountain tarsier or the lesser spectral tarsier, is a nocturnal primate found in central Sulawesi, Indonesia, in an area with lower vegetative species diversity than the lowland tropical forests. The pygmy tarsier was believed to have become extinct in the early 20th century.
The “cryptic” animal was found along coasts of Taiwan, researchers said. 8-eyed creature lurks in underwater nest to ambush prey on land. It’s a new species
The eyes are large, even larger than those of nightjars. As in many species of nocturnal birds , they reflect the light of flashlights. [ 14 ] Their eyes, which could be conspicuous to potential predators during the day, have unusual slits in the lids , [ 15 ] which allow potoos to sense movement even when their eyes are closed.